This extracts string annotation objects from the minidumps and includes
them as form POST key-value pairs.
This change also starts building a crashpad_handler_test binary on Mac.
Bug: crashpad:192
Change-Id: I68cbf6fda6f1e57c1e621d5e3de8717cfaea65bf
Reviewed-on: https://chromium-review.googlesource.com/749793
Commit-Queue: Robert Sesek <rsesek@chromium.org>
Reviewed-by: Mark Mentovai <mark@chromium.org>
